Hi all! I have two radiators for my 24 tudor , not sure which one to use? one has a 2" tall neck and the other has a 2.5" neck.
ken, I would use the one that the fins seemed to be the tightest fit on the flues. If the fins have come loose, no amount of cleaning will keep it from running hot. The difference in height? could be one is after market. KGB
Try one and if it overheats or leaks, try the other. Use the best one.
Are they round tube or flat tube? Flat tube offers better cooling, all other things being equal.